From nobody Tue Dec 23 23:51:16 2025 Received: from zucker.schokokeks.org (zucker.schokokeks.org [178.63.68.96]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 917B9605D6 for ; Tue, 30 Jan 2024 09:50:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.63.68.96 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706608261; cv=none; b=nTuyWSzlx0VSHbPtM+ATsdd0ZShPVhLFBPZgKd9CmXVX8FTGJdFb39eJF2luzisnrZLqkAkNbJAp9IVNXFeMfKf6j9gx+PGMMmOLEUEXV5CkXyAkr7dkumgW++foLng4E/CEvue2A0ft9sBsiZ7RCgzq/ddTLqiy0edn/EIyhqk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706608261; c=relaxed/simple; bh=ZQRIYuoVdGBY3FYjM+SKKH2fMwbpdB+uPgmzsErs/zg=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=FTV/xxKYBWC+0MXes60aXdzsDCViZwc+tfCbqkN1dGfw0qr3ZKw9vcd+BSy3e1unrEih5F81o/0qSLxpWQ4jw559WEDta2U+BQar0JitZINtt09DLhFVMx47dFD3IDZYYldTL5xDPSX4rupKz8npScXbbCZ59OvzLpO4iX8/VKE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=hboeck.de; spf=pass smtp.mailfrom=hboeck.de; dkim=pass (2048-bit key) header.d=hboeck.de header.i=@hboeck.de header.b=WS6HwZcH; arc=none smtp.client-ip=178.63.68.96 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=hboeck.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=hboeck.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=hboeck.de header.i=@hboeck.de header.b="WS6HwZcH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hboeck.de; s=key1; t=1706607945; bh=trYWNAUV0wSUcmXctj60BCLcFrht8FOcYWG35FtbyNs=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Transfer-Encoding; b=WS6HwZcHIOtytoJP+WpQ2LDHfPR3at5pFhpIMhqc/I7l3Gw8MUFWhAMMV3uxb68L7 n0EhK+TmQabxQwO6yXbiTHp5l00JC8aleaKudL7KvA4ljCk4gqTwiE+5bJSoAHhfHb zMm6Y0bHrWYPl2voMpBGpUluPtNbpRFtITJDNm6wcrH8ugR5ZHB32oxYWYN5KBiTMr yGAzyTsVeve+jremtgeVmdyuAtrrcRbidI/6CMDvDgqvBVBZCRKunfV+34xEtQzciB gAMSSp9hi/aS5DzTUpGmJlTvklzoj1Q6oyECUvwgnLOFaFNKOwQy602FvT+KqHYT68 qGi/ANi/fUCag== Original-Subject: [PATCH] x86: Improve description of IA32_EMULATION_DEFAULT_DISABLED Author: Hanno =?UTF-8?B?QsO2Y2s=?= Original-Cc: x86@kernel.org, linux-kernel@vger.kernel.org Date: Tue, 30 Jan 2024 10:45:43 +0100 From: Hanno =?UTF-8?B?QsO2Y2s=?= To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com Cc: x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] x86: Improve description of IA32_EMULATION_DEFAULT_DISABLED Message-ID: <20240130104543.28840812.hanno@hboeck.de> X-Mailer: Claws Mail 4.2.0 (GTK 3.24.40; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The description of the option disables a default, but does not mention how to change that default. To make it easier to find out, mention boot parameter ia32_emulation. Signed-off-by: Hanno B=C3=B6ck --- diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5edec175b..a65ff33e0 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -3006,8 +3006,10 @@ config IA32_EMULATION_DEFAULT_DISABLED depends on IA32_EMULATION help Make IA32 emulation disabled by default. This prevents loading 32-bit - processes and access to 32-bit syscalls. If unsure, leave it to its - default value. + processes and access to 32-bit syscalls. If set, IA32 emulation can be + re-enabled with the boot parameter ia32_emulation=3Dtrue. + + If unsure, leave it to its default value. =20 config X86_X32_ABI bool "x32 ABI for 64-bit mode"